AI Cost Calculator / Model pricing
Gpt 5 Nano costs $0.050 per 1M input tokens and $0.400 per 1M output tokens (list pricing as of 2026-08-15, sourced from OpenAI). See the full rate card below and project your monthly spend in the calculator.
| Input | $0.050 / 1M tokens |
| Output | $0.400 / 1M tokens |
| Cache read | $0.0050 / 1M tokens |
| Cache write | Not published |
| Context window | 272,000 tokens |
| Max output | 128,000 tokens |
Official source: OpenAI pricing page . Batch API discounts (typically 50%) are available via the calculator's Batch mode.
A chat app making 500 calls/day at 1.2K input + 400 output tokens spends roughly $3.30/mo on Gpt 5 Nano. Enter your real workload for an exact projection and to compare against other models.
Calculate Gpt 5 Nano monthly cost →| Model | Provider | Input /1M | Output /1M |
|---|---|---|---|
| Mistral Small 24b | Mistral | $0.050 | $0.080 |
| Glm 4.7 Flash | Zhipu AI | $0.060 | $0.400 |
| Deepseek V4 Flash | DeepSeek | $0.100 | $0.200 |
| Gemini 2.5 Flash Lite | $0.100 | $0.400 | |
| Gemini 2.5 Flash Lite Preview 06 17 | $0.100 | $0.400 |